0: https://www.sciencealert.com/word-jumble-meme-first-last-let...
For mature readers, it is a big contrast because it requires "sounding out" the words instead of being able to decode them in chunks / a whole word at a glance.
I would say it's more of a publicity stunt than anything. It looks kind of like Old English (maybe) and definitely isn't recognizable at a glance, but the fact that the letters make only one sound in this decoding system is a major advantage for beginners.
As a system for writing English it seems superior to what we have now. Spelling telling you how to pronounce something is how most languages work. English by comparison has no consistent framework, requiring a lot of memorization to build that mapping. ITA is only a stunt in retrospect because it never went anywhere
So - “If you enjoy walking around the hardware store for no reason, you might be someone’s dad.”
Kind of misapplied in this case, but I think that’s the joke.